Remove Platform usages from NativeProcessLinux
This removes the last usage of the Platform plugin in NPL. It was being
used for determining the architecture of the debugged process. I replace
the call that went through the Platform plugin with a lower level call
on the ObjectFile directly.
Subscribers: uweigand, nitesh.jain, omjavaid, lldb-commits
Differential Revision: http://reviews.llvm.org/D21324